<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<h1>请选择你的专业</h1>
		<select>
			<option value="0804" selected="selected">软件工程</option>
			<option value="0805">计算机科学与技术</option>
			<option value="0803">网络工程</option>
			<option value="0801">大数据</option>
			<option value="0802">信息与计算科学</option>
		</select>
		<h1>小吃</h1>
		<select multiple="multiple" size="7">
			<optgroup label="四川">
			<option value="511">酸辣粉</option>
			<option value="512">夫妻肺片</option>	
			</optgroup>
			<optgroup label="北京">
			<option value="011">炸酱面</option>
			<option value="012">烤鸭</option>	
			</optgroup>
		</select>
	</body>
</html>
